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DirectXMath question


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#1 Quat   Members   -  Reputation: 422

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Posted 01 March 2014 - 06:44 PM

I was revieweing the DirectXMath documentation and saw the following under "Code Optimization > Use Correct compilation settings" it says:

 

"For Windows x86 targets, enable /arch:SSE2. For all Windows targets, enable /fp:fast."

 

Why would you not use /arch:SSE2 for x64?


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#2 Alessio1989   Members   -  Reputation: 2133

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Posted 01 March 2014 - 07:27 PM

Because on x64 /arch:SSE2 is enable by default since all x64 processors support SSE2.


Edited by Alessio1989, 01 March 2014 - 07:27 PM.

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